They're growing fast. Big winners tend to attract customers and produce massive revenue growth, as Salesforce.com (NYSE: CRM) has over the past five years.

They possess sustainable advantages. Great stocks have the chops to fund growth and expand margins. Think of Accenture's (NYSE: ACN) reputation for producing results for its clients. Or Nike's (NYSE: NKE) savvy marketing.

Every one of these firms is a great business. I highlight them here because history proves that, while low-priced businesses can make for good returns, reasonably priced great businesses can make you rich.

Cheap stocks, cheap returnsConsider Google. When the search king was preparing for its August 2004 IPO, hundreds of stocks sold for less than 15 times earnings. Why pick 15? Jeremy Siegel pegs the 130-year average P/E of the market at 14.45.

Google, selling for around 100 times earnings, wasn't anywhere near that. Investors adhering to the investapo's party line -- that pricey multiples are rarely rewarded -- opted out of Google and into "cheap" stocks. UBS (NYSE: UBS) and Verizon (NYSE: VZ) , for example, were trading for 14.8 and 14.6 times earnings, respectively, on the day of DoubleGoo's public debut.

But it was the cheapskates that went unrewarded. UBS and Verizon have badly lagged Google and the market since the summer of 2004.

Great businesses, great returnsWere you to check my portfolio today, you'd see that I'm one of many who didn't cash in on Google. But you'd also see that I'm following the strategy outlined here: I own great businesses.

My fervent belief is that, by concentrating my resources in the very best businesses -- the ones that are self-funded, growing fast, and feature sustainable advantages -- I'll reap millions.

And I do mean "concentrate." One of my holdings accounts for 20% of my portfolio. It's the best stock idea I've ever seen:

Free cash flow exceeded $100 million over the trailing 12 months.

Return on invested capital is nearing 40%.

Operating margins are expanding dramatically and net margin is up more than 25%.

What really excites me, though, is that this stock, which commands less than $3 billion in market value, is about to enter a hypergrowth phase that could unleash tens of billions in additional value.

David Gardner agrees. He names this stock, which was first recommended in the July 2002 issue, as one of his five best buys right now in Motley Fool Stock Advisor. Find out why with a 30-day free trial of the service. You'll get unfettered access to all of David's picks, and there's no obligation to subscribe.

This article was first published Feb. 27, 2008. It has been updated.

Fool contributor Tim Beyers didn't own shares in any of the companies mentioned in this article at the time of publication. Accenture is an Inside Value recommendation. Johnson & Johnson is an Income Investor recommendation. The Motley Fool's disclosure policy would be the best-dressed disclosure policy if words didn't already prefer to be naked.

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